{
  "manageEntity": {
    "action": "Save",
    "entityId": "28076533",
    "entityType": "Track",
    "nonce": "0x0adec3e8c829cfd9b6eea03feaee21edcb25517e7bc7070239bdff84143d7050",
    "signature": "0x0f40b1e0f8381fd1a3431a6628c717da33f76d70e44285ddf3b5a69c710b5fb6565f15178b61eaad249620373858407904e8dd8dc4204a2047723e0209adb6f31b",
    "signer": "0x767f09338Ac6CE8645c0a76a17a560429b582132",
    "userId": "520958130"
  }
}