{
  "manageEntity": {
    "action": "Save",
    "entityId": "420242680",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5b7d0ba066dcb0cf091406ae4e7e21db1ddb6b4085d55ba18340488e7a3c9702",
    "signature": "0x043aab58f57d50289e4838c233a0022912ccf8eb21e2bf12c927d0327b3a61c90e1d4b4658067e8cf0330fec6dade784b5d43819dfe979bb4aaee02ea63b37531c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}