{
  "manageEntity": {
    "action": "Save",
    "entityId": "206643",
    "entityType": "Track",
    "nonce": "0xce54ed13d53d58427ec735065601ccf762f309125005ef3cc9c01451f4dcba51",
    "signature": "0xa2194c60263c7f2640ba78810cfe18e0fb3c2fde51df4aa3b375b4d308f0d974672facdac40e86ad073dbc89c8a1313c97329795fdab52b9a9c8ade73f5d0a971b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}