{
  "manageEntity": {
    "action": "Save",
    "entityId": "1052920297",
    "entityType": "Track",
    "nonce": "0x27f2ae4307ad89f51091177864fcefeee8b74fcc763d5993faee5a3afcc21525",
    "signature": "0x23997a0aa098c8bbe5059376f49e0a28187bed8fb6038e0275a61fdc5a6818ac7bc1c38c5953f66b5a10e6b99c98fe59d7f12a1196b01e66c40ac9a57523ecdc1c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}