{
  "manageEntity": {
    "action": "Update",
    "entityId": "471296820",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x921a6eb37359cf8e7e3f73a0666291f1390a3d00de02b58e631b5e4f92505ea9",
    "signature": "0x4b21506e111b5689d035c40f6a26b8a0af80652f186e8422d4e2d5dd631deff453673bec83c9557be4e2ed4d03167e8d6798b687a68a8e05d71d1873582e5d391b",
    "signer": "0xF3Fb0396BDdA45046c86113667F3270fC128A73d",
    "userId": "471296820"
  }
}