{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5942ee1490a7b6426445a6f305360fc1adc3f79bc76cfb4e12ff891e29fdc6d9",
    "signature": "0x5767dbf45324bfbfe3cc1569aed72df1c7b132bb90de05959e26b7fffeec37ad1f4841e0cdabe069f2f86063a93bf98e97e6fe05506f83627bbb74247c67f5fa1c",
    "signer": "0x16a54865620979587337abf52693F71E16a95Bac",
    "userId": "219724044"
  }
}