{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xc05584fa177d04b194f75d866269fd3e64fc16154d8989f3a3d6b98f54468432",
    "signature": "0x436c020b1976c1768d7c6f94ab2cf6c1f480a9891b1c0f8a3f70e85ba95b6d56155f5515107764dbf9546e33e7f36148474c2bc44f7485873cd904456c8878071b",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}