{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x788e2b5ac9921867d86ea6a1de5f14c6fa80061e523c42d01c91acc6a0a8e562",
    "signature": "0x4ff104f60ebe99331cf4a7d89e775a299dae9f475e8c6af26e97134ebd1bbf65165799cfad85f976bf6c8c3df3ee9312345fd79950189cbec35f77d147a5e7fc1c",
    "signer": "0xb500b2CED2B75f0A50b914A863273473f7Dcb5d7",
    "userId": "182525799"
  }
}