{
  "manageEntity": {
    "action": "Update",
    "entityId": "690678941",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x05bc1cf3ef29359f6d3b00a8dc929f20b84695a1b52b0ac4bfd6d19ff6bbd6b2",
    "signature": "0x6e89d42d344c1b02e088a24be862b44b801a969b1510d8c6e51f24b190ccf22e43bda251c9c3517bd3958b7635e4c703881d9e77f441b6601c9212158ebef2b01b",
    "signer": "0x456559A3512B8bf6eed76D850aCA3f63abD8F134",
    "userId": "690678941"
  }
}