{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x88bcf56ea5f7bc942dcf15ce2e7ef79ed423ea4ae1aab41c506d52c983491fc9",
    "signature": "0xb09b50654c580e1189cfb3c09d461026975d93adc135c1dc83dc508d52b69d8048ce6805f9cc371393147c1c5290bdd88dc4f847ee554d3692981375929d41121b",
    "signer": "0x87965b6c004C7885F2Db2C072f71dB24dE69C53D",
    "userId": "472452659"
  }
}