{
  "manageEntity": {
    "action": "Save",
    "entityId": "1114376840",
    "entityType": "Track",
    "nonce": "0x26617a5f4ee8d4baf3ed00205c00a8ed087cd63e06f10ba0fcde83aa3ff599fb",
    "signature": "0x89803425b80681dc563c7a6a90b4d2c6943e0221401545a152dbe455e0a7ec2b27efa653509efc55120e8b996ca06456fca9487bbe713634d94ecc1d328ad1181c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}