{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16959",
    "entityType": "User",
    "nonce": "0x80aa8cd37c46913810577b311a3fb5a9c5ed3110b7cb7bee0f672dfe4b6f9bf5",
    "signature": "0x1516e9d85bdf666636ebc8d970439dc5504dd1a1369cc3dc5a88e44fa01b3cc5661aa230a3802069d9311bc97ba2f98890715f869d6adff099d40fc5167740c21b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}