{
  "manageEntity": {
    "action": "Update",
    "entityId": "75913404",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9d8eb6ad8530f7a2c622a77a1720a66476503054132b7302d59d66cf1066c5e7",
    "signature": "0x27cc6c8e8e12df7c66d7bbadd185060c0f51ae49cef06e014b297ec9f221395170652a72a34282686bf2a54ec2ded4c1274cb180bbbcbfefe0bcf0d83403ffc61c",
    "signer": "0x9D268550d68ED91b1C62c27f1a36f56671568D17",
    "userId": "75913404"
  }
}