{
  "manageEntity": {
    "action": "Update",
    "entityId": "609891644",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x997e3554a74e7841aec71dfa03f2f179a0d6e8a58ae23ff72370f82921e0f228",
    "signature": "0xf561c2265f76f8a7ff83670b88e827e591fb9d1d346f5956e5fd44e90b42233f390fab58660356536d7e03617d860813140fabaef7dd275b850c27da383bfa021c",
    "signer": "0xF21829b5edc91BC6d20Df83C6d561B07e9D7FB9F",
    "userId": "609891644"
  }
}