{
  "manageEntity": {
    "action": "Update",
    "entityId": "365550737",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x18c9e3e61b9a7752875289bda991dd606d2a668a3cdb6f5b7bd753a6da3cf8e9",
    "signature": "0x64c621921a5f0321f425b70b2765d4827f10c8cfcce011bba1db8c5a8a4dafbf5dd0739419d32d91d4a21c09ddc6ac8d6278967d4311025917c158261248e34b1c",
    "signer": "0x723381eD168292Ff98fDA13b4424Bd1845eA0C86",
    "userId": "365550737"
  }
}