{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "721084704",
    "entityType": "User",
    "nonce": "0x6d89e2176460dfc734233b4c2cffff311109f1ee90c3c30dcb27d8affd199e5d",
    "signature": "0x4bab520c566125cd150c02a4158874a915f39786c4f7befa1bf89a49eaf27b080f4b7675322692141965018084976ac2904651953d4d2e3a83162f5d4855f4281c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}