{
  "manageEntity": {
    "action": "Save",
    "entityId": "1182201936",
    "entityType": "Track",
    "nonce": "0x1379a4d1bc2156fb18499fd77b06e1390af494ade6f142a41e8206c4376e14a5",
    "signature": "0xaeb3dce9aa9d56079066abf03db9b0d6c90a7278de2301cca2286f5db425eddb480407dada635dee3a0825056829c060443dc8a8d3125861ca0f5f58264816eb1c",
    "signer": "0x292cAD2d430d0D29FfBC2015255186D0C2408b7a",
    "userId": "12634"
  }
}