{
  "manageEntity": {
    "action": "Save",
    "entityId": "262763886",
    "entityType": "Track",
    "nonce": "0x8f185fbf1d8a4f75290686bd1839562440d98b16fbe29f334279f8848d17f903",
    "signature": "0x60cf3aea21dde59116bec20ec458008140ee58fbb2e0ed017a3884f08b0958e007d48616dce9de5881c7256dadad22ddec3acdb020fbd46b5b4db38348821ed11c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}