{
  "manageEntity": {
    "action": "Update",
    "entityId": "547925274",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x78d7a6546c519e6c78999ebcc25b18be7532b0c4fe091afdce8aaca6649b6d2a",
    "signature": "0xf62e6a441a00506fcfbcd7f4abb9ff1a5cd53b80253e6b1742b5116f8b01867a2af5a7b773ad68dc3237b0f680daf54ed6cd86f83ef84d1dbfecba1ddea0bffd1c",
    "signer": "0x129cD5f15608Aa6d10d553f85023e9f6f6f30d9c",
    "userId": "547925274"
  }
}