{
  "manageEntity": {
    "action": "Save",
    "entityId": "1733373213",
    "entityType": "Track",
    "nonce": "0x92344642745333e3638e4ee47a827aecb06ad5f4e425d9a15353088439b717d6",
    "signature": "0x926659bd4b1931747f346986d0da71f7c781027f47b55873f53b1b7f49dadb283503fe0661281268152f6cc169fcd94b2d47c35deefecc23340cc90180cf1c5c1c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}