{
  "manageEntity": {
    "action": "Save",
    "entityId": "2061657044",
    "entityType": "Track",
    "nonce": "0x0836c79d31e1ab2b5b95c74be99e213a8e1d24b6d76fcb5e9210f33b32556865",
    "signature": "0xdd999289aafcd30cdcbe23627b22e763989daa069ecac252da4d338d4a00564c086a115ab19f7e67ca7d2db27c8bc3c8acfc5f07fdcdbbe14a3a8a3f8688c7371b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}