{
  "manageEntity": {
    "action": "Update",
    "entityId": "152746608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x118722357268f052a9002e1f72fd8d2c1ed3c1a7d5bab1048dd6e8a24f5f18a7",
    "signature": "0x51e72030fd21fc5fc6040158d3163c5e56538bb8e336d44bb41611d4d9d7ce536e7f28ce65bf469e68b133d6784b6008b4b6c8dd953382eaa5cf48ac7f3317f71c",
    "signer": "0x141Aa811b9C24fAB768B4D3Bd4440c6502F16b64",
    "userId": "152746608"
  }
}