{
  "manageEntity": {
    "action": "Update",
    "entityId": "111225568",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x88c01b7a12366e5bcca74fdb2aea976c33340977a8b495b3eb5c63eee6a6a0bd",
    "signature": "0x1b5cd6d857de49f716d7460e74a2fffe5a4b86c4999b03b18d719fa213d1bb2e70d4fd67a9885bc4e014279b246f7743316e0cff8fdd41aeaa1ac7579a16249e1b",
    "signer": "0x81bae5FC31dfbEBFeDddCEa1Bf962864178Df04a",
    "userId": "111225568"
  }
}