{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x55526edcfc5d7e13ae475740f0eb595dd01a5460569e03d62a95cb6461bdd011",
    "signature": "0x76c3b12d7d1e9c4943a537b6f77c62c4f0a9f32ce40015e7f1d043a68e7562a2190868daed6f63fbc40e081540813d13591bea7b5af7af0ca8bdad4cfe7b63841c",
    "signer": "0x4F4b84cCCf69D82A17a0f5b174FB3fc59d165Da8",
    "userId": "573816074"
  }
}