{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348015",
    "entityType": "User",
    "nonce": "0x674398b2212f160a4c88e431ca43aa35090319bf9878264822288876f929b7bc",
    "signature": "0x4c34f6d114080a27e5560c677970a7e4d0d0affbaa0bf81b5b90661a376a38fd19ca1d12cb9d73bc45f2c7d19432b0155ad0dbb6aa97dda7a7941a6cbf7e7b691c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}