{
  "manageEntity": {
    "action": "Update",
    "entityId": "422383007",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x964ead6f1eb6e1db76cc392aa437ca8b8aacd5d64429d93743b79e3bc49a659d",
    "signature": "0x1981ec1a3fe3b3d6fa1af3ff40b9fe697e0a0336055fee1886777e60dee468067e9de2bd8841c07f84d42ff8835d99db943a0dfa021a7d79de83fe611ea2bb081c",
    "signer": "0x4466e1a64e35Dbca375F17dc03485C9C5c71F49c",
    "userId": "422383007"
  }
}