{
  "manageEntity": {
    "action": "Update",
    "entityId": "899945423",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfc284688d73a78026e70ceb18a294b0f6da71cdf4acf65fe9c3d3dc4844ca34e",
    "signature": "0x5dca1815b165eb258b9a2203640f1c6093ce8667f5a9e1e67c102c3b4493e9176fdb235ad3770257b2d7fddd83a9707ff681d7dbe2269e7cb1394f6dbfa817e81b",
    "signer": "0xC0d2d31EE9CC68A56e11FD4701c0C34EA9B436D8",
    "userId": "899945423"
  }
}