{
  "manageEntity": {
    "action": "Update",
    "entityId": "593682731",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4c44be0e7d355b64d7d1d226b34552a2ad689caf7856f4113d69116a69b004d4",
    "signature": "0xe0499d3bccb1624e5fbdf454f976132c656d129bb809907f2233db68a4c94b8a7150e44def951f7c47a4a8ead43bfc20a2fc59f2058ffffc1fca10225a01a2951c",
    "signer": "0x66d0Af4A6D17aee8eeb3f04953c1736d90B76F09",
    "userId": "593682731"
  }
}