{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcedb16b715851132fc86c92011039567bc70ef92ebf0b825ad27919ee0445df5",
    "signature": "0xae7a17a7092e6a023b4dc9c9a974438df20f1f648707c2221e7641c32b5e1ff71b6bf0d05ef37c772986d192738ffa8d2f7bfb553c54acb473551adc3bd1a0191c",
    "signer": "0x6aa3E2bE2AB45Fc2Ad5686BceE8143d03636F391",
    "userId": "89723135"
  }
}