{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1eaa84b9189d78126c995683e583dd1b385d968dd14add6c7676cb58f44bbfe4",
    "signature": "0x62430dcf067bcc8e57b1bc026a8cc4e979137f9462f5ffbeb5bfcb0098e9f0021595478290836c53c9ca1e31d3f60c5124620eaf31ca4af85357a158fc6b1d961c",
    "signer": "0x93d63D868968814aF44a40bBd1579C25A8c32fac",
    "userId": "33513235"
  }
}