{
  "manageEntity": {
    "action": "Update",
    "entityId": "963546567",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x214a91e821193d59fee27d39edeaf0aac34124ba991fabf838f6585e995a069c",
    "signature": "0xd009ff332d30d027fc29a94a16d3a2e162ba8e55347f74f97a2747712d563ad21a8b2b8649a70e366858bdd5b3878bad1d1c446809f0929d702477bc8707c7411c",
    "signer": "0x500C0B059Befc9f07796c2dca9CAca6Ba1934faf",
    "userId": "963546567"
  }
}