{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf3d4800d2133f90b5c60d443e52c10e2fd0c3e2c0ac5d320716d50bfbc9e79c2",
    "signature": "0xe6fe0503cf82c83e6e103b26ee4044cb515ddfc5b4e8e278bd93117ea641a9ad0b5bcf3656d5d5da0d20de14437cae09ff9b8267c5c5fadf9639aa2e29288d9d1b",
    "signer": "0x4a123978b09EfCebffDB587Abae5A5a10e96ccD8",
    "userId": "935954423"
  }
}