{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "754276083",
    "entityType": "User",
    "nonce": "0x03a0d7f6647637604d06be9f9828dcd49d75be4234936d02b03b72f778cec6d7",
    "signature": "0xd6b143d41208599aab12921cfa695a40701cf728644098721787b190c008ad81353ec5ca8aae50d50c329a8b06a5851a7a0142002bf77a9916c0511bbff7d2701c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}