{
  "manageEntity": {
    "action": "Update",
    "entityId": "787599159",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2e01accc40d8853b8cae1261a487a230427391a1c2c82bacd8f79066fc9a8eed",
    "signature": "0x77b156a18c9c9cb18add3fd4b57f67f9086d26661988f83ec9af1faa4f1288032f1b1784cccf31373c649ea92c3c5d9fc8c9cef9e190ff8dc71870e07f1979e11b",
    "signer": "0x2d9dE0031960aD6f53e402E622254d2AeBc7307D",
    "userId": "787599159"
  }
}