{
  "manageEntity": {
    "action": "Save",
    "entityId": "1317473192",
    "entityType": "Track",
    "nonce": "0x783373843c2cbcfb37d1e326a8ef29239272ad6140d8471f061a527b184ddd05",
    "signature": "0x472d2d10790e83619eca97c84fcbc60b0ed6adb721225892b541ea38ea6a5f421918a23ba554f289917ac8cc88210799c87117feb5e8c8a550d03f7181821ff71c",
    "signer": "0x76433fcfc10E04743aB4EB98660d4B47526AD243",
    "userId": "328228955"
  }
}