{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1780850",
    "entityType": "User",
    "nonce": "0xfffbb4cebac06d2b2248dce1c2c842beaf766213932ec9dc55a438b25ccb5546",
    "signature": "0x69466c8f68533295d53721ed02688874f4abe8304727fb531fe42d5a3a14ce453f95ef5719c16f37b39748f48bc52d18bf6477bbe525860d4b34f7cf80c9568d1b",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}