{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaaf3b18699e2b09d1de9455719f394ec01ab1ded526e750b28c18e6f39aec08e",
    "signature": "0x3ce160d036c03bdea4ae41faa90fdbbb00eabee293ed67ad27a7594c242316c94590f04b7195a2a8dbdc92ea5df5ea407860b1a03c44708894392fce38f8104e1b",
    "signer": "0x9200720B947EA1F08AE550263532A81c6AcaF282",
    "userId": "509075420"
  }
}