{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3fbe74aa95f29c6b261de595313658182f52a1fa20baa635542b8fdedc8e3d92",
    "signature": "0xa002c9b943fd26665596aac1be573c072b600466e2e5ad5c3e0befd766217f28736a1f638f5e69c9de4ea8dcc85a6f744f35fa1cdafd2db4f0ceb868d0c3324f1b",
    "signer": "0x85Abb3Ade7EDAd79Bd53aDc2F33a1B0af2DCfbB6",
    "userId": "205496794"
  }
}