{
  "manageEntity": {
    "action": "Update",
    "entityId": "213444366",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x40ec37f5ab19306c0ede3c045201d9e292657db33ca02c3d4bbc69ee45a11b88",
    "signature": "0x1d5679535a492693195985a70a4087bb24317475c13fe4fa93a71dc3d94dab9b11e234bba6e50707c8e4ece774ba0062af7273a3dd4067511ad726d35b244efe1b",
    "signer": "0xFd9082A9c5fb33865E5213A08020d021670054A4",
    "userId": "213444366"
  }
}