{
  "manageEntity": {
    "action": "Save",
    "entityId": "1026018",
    "entityType": "Track",
    "nonce": "0x56d5fef678160e2a6f99226dded9a354c268741a3c1f624fe62fdb9848f331f6",
    "signature": "0xaaa8e9972ad332ac7558031885063610c0abf2aeff2c6e290274a3793a7915dd2de29adade5631901f762438c2dcec17ead6c60aeac3a3580e5e68e86c9163b41c",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}