{
  "manageEntity": {
    "action": "Update",
    "entityId": "155003518",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1aeb3566464d7752dfbf14de2ba95dc04a90344bae528325079d5baba3c8e6e9",
    "signature": "0x1dc0f31859ca99e3cbfd8b586a1d81d6ec61122925240b89a8e9cafd1d01bec931013271f4e6b3d1214653dda437fff772b74de1daf2ed84a036f75acc8438e61c",
    "signer": "0x13B7ce3401B600B95DFBDC848AcE1C0558a2dF3b",
    "userId": "155003518"
  }
}