{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "399822794",
    "entityType": "User",
    "nonce": "0xd60c37eab7ee72bc9601d7358dda6ea5551b92f251b7edccddc22ba914773ca2",
    "signature": "0x3883572de9a7cb785ce4d176eefc9f45f2ec16f5dc3fdc957101051d5fd3dbff2eeb3f4ad63e704abf5b8ef686ff0d8aa180ccd4a9fc51a04fd16c2d70e0c43d1b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}