{
  "manageEntity": {
    "action": "Update",
    "entityId": "602199524",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3ae60de02d00a6faa52290ffdee9cb89731558cfef9306e5b9fb1893300ebb5e",
    "signature": "0x7d37042dab79ce624326534114c0368f385783e14ae9377613fd8270520255ec0f25cc99bdf507014e221f602c0bdffb916d5189ce877dcb6c38be10f9544a5b1b",
    "signer": "0x041263f2CF3f62Eb0BBFc48804443e54483E2A9B",
    "userId": "602199524"
  }
}