{
  "manageEntity": {
    "action": "Save",
    "entityId": "1928330128",
    "entityType": "Track",
    "nonce": "0x25f58cee9f206722e763423bda8d504a6c095c6654fad87f70319ef628027e7e",
    "signature": "0x83d6f2abf65e56036313ce0c3db2527d1d12cd44c11053a13b16d975d56580fb1acf8195c5ca4e3a382b1e1021d093e4fc894c451ddffa90e8dfbda360ab90291c",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}