{
  "manageEntity": {
    "action": "Update",
    "entityId": "946478736",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x742ac45c84b089510fcc2697e4a1986c694fa03d1937bcb8149bc39b70d72a7b",
    "signature": "0x984e84b8496610189f7217b2fef72a25f5ec2e82eb9ef8090e425fba101e69e73d472fcdedad18d6a74169e8811d41d73889a2a9637d9ebb6cc728e6530c0f371c",
    "signer": "0x12d5CBa4485f436EeB6B89957dEA214D6542b530",
    "userId": "946478736"
  }
}