{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0xe4d11b5516436e511ee3495bcc8d8c7770a39e13744a664c404c445cbe5b2c2e",
    "signature": "0x7c02695ffa9e37ccb2ab56476918a74654e7146486ea70ca965849474a4cdd384529ac3f8decee67eb2adddd4caaa2e104b3e50fab10f3ac3c19bdbe200a7abf1c",
    "signer": "0x24A60f53A071b746bbD63fA3be65c68d6295c847",
    "userId": "693365797"
  }
}