{
  "manageEntity": {
    "action": "Update",
    "entityId": "778413362",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc0ae7a2d3fd0c0f40f0b96ce7bc406441e02d9eaf23e25ac855066c5a2102124",
    "signature": "0x8e120d1b09d002591a954f9ccdb9559d4c8f99058fdcdcad2dc2c30147a0289e0157dee8ca5c5bcffd478eb749a52e51aa69d839a8f441b080bf033ebdc2e4461b",
    "signer": "0xfBd4DB3bCa5fFBA89e45aBc1dfde8dbD5CceeD0C",
    "userId": "778413362"
  }
}