{
  "manageEntity": {
    "action": "Update",
    "entityId": "565509746",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe7a59ede7509f13344225b5cad255daba27d281f8ff2e5b78dc80a506b061e9e",
    "signature": "0xf966752f11aa2fa3c5074858b2b0586f511d1b3b090afb71acd18440c9b9f6531971e7e814bb75a1c74e690345bb623f8672e0434ff5155e77997566318f410d1b",
    "signer": "0xa30D28f9D78b78FE2B434731b220d297F3f44713",
    "userId": "565509746"
  }
}