{
  "manageEntity": {
    "action": "Save",
    "entityId": "2006792140",
    "entityType": "Track",
    "nonce": "0x791bf18707a20095898273ee362a8b8d66ace16242bb616054a818bc660af218",
    "signature": "0x676d9928b28893ca639c143cebc2ec599d112586bb37ac2efe4266fece50ec8830962e3206d5900da7e3d7429978aa8ed10aa1eb0c22f945da09b4c7e6d6ab8e1c",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}