{
  "manageEntity": {
    "action": "Update",
    "entityId": "804338618",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf13374c2aea24ac198530af51c370177f9cd8900afefa64bf7c173e981701094",
    "signature": "0x7b08500558e63f7fcff16348aaf2ce750cb2cd2d387323f2110de9b1c0aba4664467639aca6a6c5adc4cdbc3fe2ed7b1b9aec3f17a620eae1665f0979a20e12d1c",
    "signer": "0x15CbA89237A5fC345232C91176B89122A0EB777e",
    "userId": "804338618"
  }
}