{
  "manageEntity": {
    "action": "Save",
    "entityId": "833300220",
    "entityType": "Track",
    "nonce": "0xdf0572e5247ed4f1d2598fe55212b099339236fc09e971c46ba7e68f4ee14110",
    "signature": "0xbbc566ae815ae86bc421edeaefe9873d54f921883003fc5588ba39cba904ed6f11b95ade550b232db6d1d9a86187124c0fad39c6c959c7b344bf0cedaa1891ec1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}