{
  "manageEntity": {
    "action": "Update",
    "entityId": "602191690",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf5b95518f5b4ad432396ecb3f9dfbed54d17450e01139b10e94d1286a4e62cdf",
    "signature": "0xff1953b3c169c286e2f54b4e8e847371e864a3d81a00e7abc5c899462732bf1c4a9df3a673dc00058db21df60dbaad06d1963122cff9e902694e664bb9b8e36d1b",
    "signer": "0xe5a18550Cf10F94bF99de3632A134D5faB4b2917",
    "userId": "602191690"
  }
}