{
  "manageEntity": {
    "action": "Update",
    "entityId": "405238307",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x38806a38216172dd4356254979b1bb7024ea743fb9b3b824f27eb7360eebf22a",
    "signature": "0x413fb37344c16ab3057f764faf3d3c2b01664195a6377176f2e3a82247b4dd1a1d15607a3f687946737c4216b78f197af73737df7e13c16222108957e467e1c01c",
    "signer": "0xf447558044CFFF10B44217fd32A3575D91cfbF07",
    "userId": "405238307"
  }
}