{
  "manageEntity": {
    "action": "Update",
    "entityId": "634413567",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb99c5fd8905a954a0532081801cd1ad979676c9bd10035b57114874150d34479",
    "signature": "0x9c6c42e36177b8a7f2ff8d37b753e03595d9376d79cf1e882667d3f50a307c6a176369f862e36c76bddaadce1276f4a3f77cdebb4a7153adc4d7d19a37028c9f1b",
    "signer": "0x96423Af0791593bf922E24b3296A828e978B4C85",
    "userId": "634413567"
  }
}