{
  "manageEntity": {
    "action": "Update",
    "entityId": "1117144910",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"a\",\"is_private\":true,\"playlist_name\":\"Test\"}}",
    "nonce": "1778503158952545166",
    "signature": "0x2fe860f0b6a8d4112f8e375bd8a47fc1ecd2f2ebc159f2833a63b500abe3d3694dac68da60e0d065dd2bdd2a42b23c48f860750cc507f5c76accd414c105d24e1b",
    "signer": "0xecaC916FafF0E75Df08fc73D2252307ae8DF8981",
    "userId": "477662771"
  }
}