{
  "manageEntity": {
    "action": "Save",
    "entityId": "1102257631",
    "entityType": "Track",
    "nonce": "0x71ad17a4d4666b4439687749ec286fd128eeb34084e78ecf96b254ea8dce2f53",
    "signature": "0xf432946c155b42b4e39d97591ad01e7bbbc3c52c58e796335c6226b12cb408395e363a17cc8759b8e2ecc35d3a4bcb94d5ed0f9d9e0ac5473bf6fcd59925ada31b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}