{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb0ff2fe2a5e969ec2f4202e83e66f02af9f2b022b57eb367998fb303065aca88",
    "signature": "0xfb3ecfa37cd5ac3eea5743c6558f2dfcc00a8331cd3bb0c9d7b230c55de5077230abb8ff94d4b97a423660e8e09657b270b15a3bcbfa5b52d74f5bcb89d27ce71b",
    "signer": "0x69d1592ed76BC3Cd9A2ed561f96E8Eed4AcAf835",
    "userId": "668195862"
  }
}