{
  "manageEntity": {
    "action": "Update",
    "entityId": "729344507",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieravndtamgzynfyfavu4ddsgewhjhcwpfxb62ms5hripoxnzmjokcbq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":580550791}]}}}",
    "nonce": "0x6033ddd10dbb06fef7fe9b55f2f1bf10a96a7d0000d0de6155493e1f47a88fc0",
    "signature": "0xeb23ae660e89c89800f7a3c21abcb56e0caf99379a2c699829e4dc4bf8487f4c116f870fb7fc4786fb5836ecaac9270ec1e5cb67715c0614d8da6793d3fd882c1c",
    "signer": "0x02e15765C61eDed8E41cC3ECE6C97dEE0F691c98",
    "userId": "729344507"
  }
}