{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991821949",
    "entityType": "User",
    "nonce": "0x06dadbd0ced661f8dfa55a2f1714d45c3a9a64f8502350a2645bbf865b72c214",
    "signature": "0x4a837840c9d2964205a49acff356a575c1301d25bac16c5928a868aed8fbd4bc29aff9292be88e3b899036d8204b05981557ddf4c0c3c232e24492f5d5816b491c",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}