{
  "manageEntity": {
    "action": "Save",
    "entityId": "117397506",
    "entityType": "Track",
    "nonce": "0xc6c52b2b9dc87333eea046304c6227c0e88bb2bb5925faa15769c2fc71fc4bfc",
    "signature": "0xdb4cddf745151b343c04a19840dc70c3d82de8aa0b9aaec6d637696a68ebcbb60de11b668bc8292b3f7aab9878ad0c93e08248df6bd6a66bee3039f016bec5bd1b",
    "signer": "0xa8E11aa224d2579f5cbdb912866bCE84Eb10f9dD",
    "userId": "951616224"
  }
}