{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7af1206e186adb711fb3b7b8c3fde271e4f22a81036a3de5e609627836d2bcc5",
    "signature": "0x3eebc7f65d5ca32f35574ce467b97364d1f2e3820c298bc54238b82193c5410768a092e07230a57c88c37bb7c2d8f0550075bec2e71c76fddd8a2375caec26d21b",
    "signer": "0xE71ee388fAb83cdc5deF0ad1211584367a3DC0f9",
    "userId": "264798556"
  }
}