{
  "manageEntity": {
    "action": "Update",
    "entityId": "747399081",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6a7140377ca8fc9ce4f739a52e6aed63a29398debe779b77d79969140979e8e5",
    "signature": "0x3136609a6c054a3b4bda99fca73a5a178866683e9711f54e77a941cd8517b158102896f32d4f5c9ed8e74ec1e4cd96bf1c88de3073ff080491938a56853ce68f1c",
    "signer": "0x135f87aF624548aC3904b2C7aC49aBD8391D5021",
    "userId": "747399081"
  }
}