{
  "manageEntity": {
    "action": "Update",
    "entityId": "645866028",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1ba02a91767349ac7c2be338e1cdd4881df08866ad70625ec83563a2daf96c39",
    "signature": "0x84d38d81114bb1d5d75342be1a2242c9aebb48c5cdfc113850d4cdc7f92785ac4a1ce07bf84bd59e0d5ea721902bb1a310e0a573853a09c85291f46ce43bb0f01c",
    "signer": "0xa68b28f9432CbB6F37Ba0358C055F536814BA1c3",
    "userId": "645866028"
  }
}