{
  "manageEntity": {
    "action": "Save",
    "entityId": "262118",
    "entityType": "Track",
    "nonce": "0xfab3f919c9d66ffd57120a937deaf831b618630966ec21d7cb95ee5aab75e2f2",
    "signature": "0x7b4079ddf4d39fa680883d1d74becd4f6ef94792865ea7a341a992e4715021ca23c1b270cf03b68fd8b0d16107fc44deb94a1f2806d10b80bbfe4094141827081b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}