{
  "manageEntity": {
    "action": "Save",
    "entityId": "2084604049",
    "entityType": "Track",
    "nonce": "0x026ec8db1d325b5ab7e99b3227b7af17d6a4790a248b8ef7f99e74088127f42e",
    "signature": "0x7b3f1052883c92e8954572cf26bc53990cbac4f3784f968ab82a8df2e2d580227f5dcd3684ca47e75587937cef22f05a1226634616dda50a6cf9e251bbe452bd1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}