{
  "manageEntity": {
    "action": "Update",
    "entityId": "640804276",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa7be0b30656ab84744e9ba6c49b1c91e40cfb73ded717e2cd04baabfb5a33122",
    "signature": "0xeb3e34eac79f26ed7652fb7019405539fc157d108335d7ca59bd6e5006553bc9098223549f2fe4b1241092fc20cbce16015e7576fb53356fe94abfb957270fca1b",
    "signer": "0x2fff57D5628D87Ce98d02775C9cF63dB765aa6c5",
    "userId": "640804276"
  }
}