{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "99574",
    "entityType": "User",
    "nonce": "0xb4a5379f54434ea42e9029ff872d46d295946d2df9225a0ca7b61cfd457648ad",
    "signature": "0xcceca181f81c2a3602227b4046720c9f6a07f5f3e966c8fb70cc0580c573531d733d3f4fe7ef9aa96d534cb54cdfd546d879157098e446c91ab5d2f4655de6931c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}