{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x7acf5ef95b41f59b3faf1c0b2edb65f3e356d3db396b4a5fe92e1ecbe4af2ca5",
    "signature": "0x3f3be74f8f686d7d1d2ceec422902eda2998a08ca8612bc57d80bb2bf3f0e1d204eeb9a2b7e217ca7f48f16367a5ec58948d9a87c15b6b6ed6e9d32e6b5f67a61c",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}