{
  "manageEntity": {
    "action": "Save",
    "entityId": "1772796299",
    "entityType": "Track",
    "nonce": "0x115964812ad872fb837e132b5ed320f85e3af35a5e0b455294f488e2e162fbd9",
    "signature": "0xc4fe735b3eabc92f27ee7fdbddda10777e3b8ed457a4fa4adad682d7744409271b41ed191bd7467a6732ae7b25fbfb0eba52e27f4b72ccd4271b3ec848f0dcb81c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}