{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "652998855",
    "entityType": "User",
    "nonce": "0x1acd04cbd1a6ac6d9cfd8309e76a0bf2a2d2fdd5edd96aa62e94dd63650cfb63",
    "signature": "0xa3d787c49e1aee5fc8f33f568e0603dc899ddfaa87ce1fc2424b87d84a809f34504be4a6f01ddd721105b8a93cb606ba5d071f1843954ea48dabd416ead954691b",
    "signer": "0xD0f51E232A92DDc965FB1FE51d04200D15d10fc1",
    "userId": "536634479"
  }
}