{
  "manageEntity": {
    "action": "Save",
    "entityId": "272410988",
    "entityType": "Track",
    "nonce": "0xd847878978377ad5351deefbc3ce735e5daa12350afafb9066e397df8806ed40",
    "signature": "0x780fe5ec13645e6d39566bb97c7807de6b4714d8ba29416c4a54617fbde016643eedd2d3a350ec913dfb4de3ed691e3d856b8c9fd822daa80ee92a26137d15811b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}