{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x74e40158cfe5a6b3cfe96e445f35be10d8987ed835654c3082279b4e2c057629",
    "signature": "0x3632dfffd0ed030da80a715a1b23af0c2ba4fd4f86218afd055183ba868a555b301e71bfc795af89dc65224ab3a08a9b548141730329094aa25df71475808c5f1c",
    "signer": "0x17141572B0250E4291cd034d4C034793AdD4876c",
    "userId": "777872195"
  }
}