{
  "manageEntity": {
    "action": "Update",
    "entityId": "858465138",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x04ec276de3e9bc2cc8a50ac0e25c26a26d30af485ce6f448c4f8167bea59c500",
    "signature": "0x9d5b3640af9d447e19f4e09f2fba998e64d8bb61edc429f9b2e766c29974e9c5787f95feee8e2f1b9487c3da48dd9dc479958f4697c83faa3fca5808953e4ece1b",
    "signer": "0xb11A87421a60283b875d2F958D27356167224eF2",
    "userId": "858465138"
  }
}