{
  "manageEntity": {
    "action": "Save",
    "entityId": "1123906955",
    "entityType": "Track",
    "nonce": "0x59636649565ff6e5bc419e1b0caaf2eecf52e5010f0a1db12b3b92a5dd3521f9",
    "signature": "0xd234a016dced5ecfda18cd162fc940659beeca92bec992a7bdd25019878a3def3e9c2ad0afcb2b57e55f8d4407c33d6fe238689a9ca9de83861955a7fc49bc2d1b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}