{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x18cd9b9f5d87ebd5b75f363513e6f22d8e9b1133031c120ad39b11f7f94d5e3a",
    "signature": "0x5065aeaa820a98316aae1be44181ba5a5aef69af339bb952156b8bfae687cfa03b653d43b23ca42caf59189c90325d3067822c22b7aec5fac30cdd606b816cd51c",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}