{
  "manageEntity": {
    "action": "Update",
    "entityId": "171570278",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x889e73c4c61fec77f5067290ca1c618be40dc6c1293ac54c9d60736d22b9a745",
    "signature": "0x428f1f2dd4a86275b7f61ef93934447864d135a54f85cea2e5fa898bbbfbd7d03432d32fc6b6fb654f898470ca7bf60b873744634ccd1e2625129ee9bb9105151c",
    "signer": "0x8dFbCcb1E2c514394233304A23fa58eDfA3B5785",
    "userId": "171570278"
  }
}