{
  "manageEntity": {
    "action": "Save",
    "entityId": "193137",
    "entityType": "Track",
    "nonce": "0x8551c03fef3c5b637d1e79808062a4e0b448e547026f24254a4a10e14e03fcd7",
    "signature": "0xfc1f1ececd7ac7ea7589b56a3d785a39ce3e1fd6f49848496bbd7cf7cfb339d67ed87f0a073e64c337b182b912b4b8b58a2a421e5e4333bfe7bdff7b97723ac11c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}