{
  "manageEntity": {
    "action": "Save",
    "entityId": "1010135869",
    "entityType": "Track",
    "nonce": "0x05de2f62962dae80e355f2820efdf94b631bd44652505ad6a3e504faaa8c2e14",
    "signature": "0xe0a06de54338eeed87e4b038b647e675558a886605124c16346b89312d0cc1e600ccee327a87136c8501a3d48b1d35965ee49a7c2ec289aaed6774e1896664bf1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}