{
  "manageEntity": {
    "action": "Update",
    "entityId": "302150879",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7f20a9eaf17250ae0fece195e513fc8500751f116e3c9dd5061625d10bc1e6c0",
    "signature": "0x6118fc88d30e57978376dcd6ecb21d4aab7b3c90d46a465a49b020c21ea507a6599b9cadead34683f5dcc5dfb0c081913b98ae35e2cbd597b7a6c17b375abf311b",
    "signer": "0x45476b43Ea7F36e200122F8cd58A0700b6b12fDF",
    "userId": "302150879"
  }
}