{
  "manageEntity": {
    "action": "Save",
    "entityId": "765234",
    "entityType": "Track",
    "nonce": "0xd6c864e1392607ef05caac8328db71ffe8f9276a31a902f09a43b626b94e4085",
    "signature": "0x6c89c85154bfadfbbba7355a892ae9fafeacaaf243d59ddb3d7ef0a8be85c297597f2370eca56cbbc3fbda1b2566ef437e414de38bf91f3e662df28577003d0b1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}