{
  "manageEntity": {
    "action": "Save",
    "entityId": "176467",
    "entityType": "Track",
    "nonce": "0xf53627ae1a81ae91466336f1d3a41d7359ce45c92bfa80c9aa4b47a09cf219f4",
    "signature": "0x7e0808a0bf567f1f2c827e008f760bcae54a9b888c87109492bce39051195c3a6fc98aafa188501483d58f398ba56d0affdd2c875c69bc509cebd0ce6cbdaba11b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}