{
  "manageEntity": {
    "action": "Save",
    "entityId": "1045951",
    "entityType": "Track",
    "nonce": "0x7acec18fcba29b11ccd1ef365a61c83ed93e869d3be7850a1e222aa5ca4edeb8",
    "signature": "0xa9983fc841fffcab3a2b7f2ccd46c691079b5dca699855fed5119c7a2492e03d46591a6b850e12ef24a0d5afced551fa3f48ada6debc5748fc4a5f7ee459e11b1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}