{
  "manageEntity": {
    "action": "Update",
    "entityId": "646161559",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x06953ea6dd9da44946580c88affbe70bf895e4e0aa4867e6c86d9af128390c22",
    "signature": "0xcdd6a0a149f4bd56b2f5976c5bc7519de21e7d3baf6ea0465908f29ff630b66e75a0818a5e0ad009aef6d156b025b303e754146b3d88b50a7ebd4ea3240b4ef81c",
    "signer": "0x73760064D08e854716c13081dE151D63b16b2Fb0",
    "userId": "646161559"
  }
}