{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "899783541",
    "entityType": "User",
    "nonce": "0xbc5a080eac0c86ee453c538a509a54972055ec712c92a6e10be88e3540f3f161",
    "signature": "0xbb25e7b34c8077ab4d958312dbd255f49ec55cfc95af51df04c136a66c5b6c856ac59e0b964b748a8ec40853909bc21a7ff7bdc16a4e3e6bb909acc0ecbacaae1c",
    "signer": "0x94bc1c80B21F7Fb76e4907b0e895E3D3fc46e079",
    "userId": "564864898"
  }
}