{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x57f6eee701eb2835a10c33c11ca0134dc9e1f23a1592c404d6394851304813c7",
    "signature": "0x19c78c5fbc481c83bba01b7ad3b72678ec9b88d46f82f4e64cb62316effc38215f39074be64d88652d46a36b188329cba94f4b5c65b3288df051030fe0fa3d1f1c",
    "signer": "0x4c2Adb8A805d7e9D4611767BA100c70FEbEDC530",
    "userId": "335638261"
  }
}