{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "584186978",
    "entityType": "User",
    "nonce": "0xe4395939af4046bcc7549c95c91b9079079a1373a6807b6f8113fbb59b2e8f3e",
    "signature": "0x648482f8f82e320af3ea1cff92966791284edb06fada65cb3f0ce81bfc2c6c5b14a723c40663534f0996ff7a04b24600a9d1cbad785501793313b6d7784f5e161c",
    "signer": "0x4F8e40E75E675f5be20520c4cEA0CbD7bBb999B1",
    "userId": "991796067"
  }
}