{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "311257477",
    "entityType": "User",
    "nonce": "0x9cec845219d6ba46a227f627c07f8c0bdc361c513af2bbae026b7a2e9270a9cf",
    "signature": "0xb546355f5202be30261e18c3184ed0e2854c3afe886d3d7d488d4ba41aec0279458af310a8282cefff090a22ca8004bb2c5981d03d1aa3d4ea80ecf9c1c3c3451b",
    "signer": "0x1F9dC682fadBAc94c0Dd4ca2232a3f490704a737",
    "userId": "737872723"
  }
}