{
  "manageEntity": {
    "action": "Save",
    "entityId": "14886044",
    "entityType": "Track",
    "nonce": "0xe1a1c79f0bcf7f5c39ab1647a1ec8ffe3d56fea19271006357c30770599f9b75",
    "signature": "0x1de67259b4c9e671169a4996d51160cda18d2e1523ee28472b809b4b58de5b4d0812dd5bc4354482bf69798acf82bad00f7e12abd05dceec8988f081cc1c97e71c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}