{
  "manageEntity": {
    "action": "Save",
    "entityId": "2114845547",
    "entityType": "Track",
    "nonce": "0xed6d36c3bcfbfc9d3404c311e8b90a3fd06dd2eac733185336e6678092a201b6",
    "signature": "0x99ab22eb1a91f05767a4e71d353ae6234e07c6744249945b247301bd94815fd76c0c1a8d08fbb9b35c6b159ea2c92afe512aea05818e1ed7535a3f0a3a2b989c1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}