{
  "manageEntity": {
    "action": "Save",
    "entityId": "119084169",
    "entityType": "Track",
    "nonce": "0x4fbf2e8de665e21a704cc50d3b46ee18722fb74e5176b2dac844295050cf826e",
    "signature": "0x7127f89045c5145b3560c90c23dbecd4a4606b62874df3f79c02fde1ba4374b63bc1dbc5894034e2edffbe663806da776a7313eb93fee11b9af245cef865559c1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}