{
  "manageEntity": {
    "action": "Save",
    "entityId": "162423",
    "entityType": "Track",
    "nonce": "0xb30026eaeb75e6af4a3cc5eee57284e519103b225ca9b02f73663d74026a6492",
    "signature": "0x0497149fe9b380989f7f350f11b3fb48947760ed1718e878340d441ce4e584cc327a5b0a1556cf0ad7964da5521ed5e151242d3a582f2fb9438c093281484e3d1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}