{
  "manageEntity": {
    "action": "Save",
    "entityId": "876305210",
    "entityType": "Track",
    "nonce": "0xa60353d2f02bf2bae51432bf80d9aa514221d425315d0190fb49f13466662138",
    "signature": "0xfdc0e913fd645c7bed9c6af2a5cc1dd28497af8bf3757cbd50561cf1674fb7c457da12370d01e3788a6d5200d314cf196cc3f54dd6619a58a033b9abf384e3031c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}