{
  "manageEntity": {
    "action": "Update",
    "entityId": "639306401",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x85c4fb680ebfd4221abc4675c6abd7d4ca6835e31a8e1a3c5edcddf0013cad2b",
    "signature": "0xd45c1c7ba39b286425d9e9ac8d6b4e51bd38d7b509cf0e1158f0972ec6e2654f767b36d6152dc78bd5a97c1e3903c6eb4e14afa9cc25e5a1d32d0412b486394b1b",
    "signer": "0x6e8091305075B855672CA0d738FbF17D4bb8d54F",
    "userId": "639306401"
  }
}