{
  "manageEntity": {
    "action": "Update",
    "entityId": "672132159",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf574b45167a33a353caf064276778128a713f79edd246ebf88f8c5ababff5101",
    "signature": "0xbc258dc078b0164e8fb2666298bda97388bebd2be4301831131c127e66dfdfd2352cee1bb755649cc19042489b4a3ceac9f4606e5d3e4f6754d4b2cabd0079b01b",
    "signer": "0x916321C7C72E089041D2Cda150EFbB1EB3BFD4CD",
    "userId": "672132159"
  }
}