{
  "manageEntity": {
    "action": "Save",
    "entityId": "461298",
    "entityType": "Track",
    "nonce": "0x465aea1924acc5d2f23cb09859cfaba1807d0a1d4d9ae97e262ac1c45ee82b3d",
    "signature": "0x07e1e5029b0066a8aba125e28961acceda932c32eea314a4af0f2d216e9bd3f808bee88da11fc85c4508f3a28947d029f583d4fe9a2fc65f2d3c5e8ae2fb8edb1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}