Signed data transmission method, system and server

The invention discloses a signed data transmission method, a signed data transmission system and a server, and relates to the field of wireless communication. The method comprises the following steps: determining a user side server corresponding to a terminal identifier; an authentication request is sent to a user side server so as to indicate the user side server to authenticate the terminal and send subscription information corresponding to the terminal identifier under the condition that the terminal authentication succeeds, and the subscription information comprises at least one of subscription data and a subscription data identifier; and receiving subscription information which is sent by the user side server and corresponds to the terminal identifier, and acquiring subscription data corresponding to the terminal according to the subscription data identifier under the condition that the subscription information is the subscription data identifier. According to the invention, the client server can provide