{
  "manageEntity": {
    "action": "Save",
    "entityId": "995028",
    "entityType": "Track",
    "nonce": "0x09f686e3c2ab63c1c9575d045d02b7e8673af00ab401b68a85a5d9f420d4922f",
    "signature": "0x2e7559f4544bd28f81ba3d4cea13ad2b75a2fcf9302973be78fae944c2ef5b045ed8c3d60a77d35d14120725ef9ff72443a76fd112620ab89e104e93c1d08d661b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}