{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "494113495",
    "entityType": "User",
    "nonce": "0x982a4eee23dc209294d7ac7a55227c1431558ba15978527af4a14d35fdcf751d",
    "signature": "0x56b3da08b505ddb0748a113096077016b52332734bc3544f3e6c2ca6844f600a722f22362897068ec6a0bd0ed424290bda0244ba3852d872d7897a1edaa21a631c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}