{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "351",
    "entityType": "User",
    "nonce": "0x937562764b819c4050ffd52f9db7588a192de379d917a1c43c070ac1979ea1ee",
    "signature": "0xcfbdc896042f9e8b92115017f20472ec94d0b088614065119074ca57d8941dc31df8dec965847384a42a10dc8242e255626137051fed08d362c3ef531d7a14c81c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}