{
  "manageEntity": {
    "action": "Update",
    "entityId": "965105961",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2c19a3930771c86da17ae575fe97ed7aebfbb6cff97c418b0a36e50892f2b321",
    "signature": "0x59579caaf9a58d870768878a97b5ff8fbf8e1db459412fa85305212fbbcde7706976b727cd9d0791b488c420a1587c0002197e6b2867030dea1efb5f118097d81b",
    "signer": "0x987a793382b79111b8FCb88647107B0f09dc69B2",
    "userId": "965105961"
  }
}