{
  "manageEntity": {
    "action": "Save",
    "entityId": "767016",
    "entityType": "Track",
    "nonce": "0x83b9bca2aeebfca5692315c69863a4a8547e5b3bae03325bf741dad4c6b06778",
    "signature": "0x1c340de9ebbbd755c144498124851d24b4fb5d17a92ac79742199bf1365f1a032d61e635edf76101575db1c996200b3a4efdfdae71e5c1b89522633d5e62628b1c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}