{
  "manageEntity": {
    "action": "Update",
    "entityId": "857238138",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfdd44fdbde00cd8c30430d2ab682219936901741051822e44deec2ef06bcf574",
    "signature": "0xbc3c528d7846b03d8ea6a01015749314bf2dddf3f5c36d00e245659e7aec48de2c1fead706a7f276cb2adc9dc1bf80ed4fe34d11189404d0ae4ad6e7acca8e5b1c",
    "signer": "0x48E351feedd188C58BD52c402d66aC0950E26058",
    "userId": "857238138"
  }
}