{
  "manageEntity": {
    "action": "Update",
    "entityId": "434521436",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd78d5f38195ec2818ee33fa8b2e9f8f4c77ad67275d01fefe72e4e1ff327440b",
    "signature": "0x6059f57d524678698a1803b858994361908c14dc6dcab7da7476d78098e9f07811d884e65d4b05f25e59379afe622bb20e7ac2b16456a02d91c3bcfe169ffe6c1b",
    "signer": "0xC96f153a5f305821032Dd799cD476fD529670AdF",
    "userId": "434521436"
  }
}