{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0x526bbb2a35ede1470ca0b79bbbcfa9f10b2838464fe316ddfab205fc16ccf533",
    "signature": "0x4379d0f162a113e6d82421bba264dc0ea478cf320c3cb5c02d333ae30cdc1aa044f97f3e829f066254506d2da47a52d053acb7a6f27619196618e0acc425089e1b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}