{
  "manageEntity": {
    "action": "Update",
    "entityId": "588482306",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x15c3821d1261a2ed63e93085845c3c8048fd5b7f4acdf06a335b6291c3f93004",
    "signature": "0x5e8c94f14b91dfde1af540592899a7a7d09ab40a639adbc1fc7d21100bf171c423768fc039621a4879fe20aee169765cdea508d8234a3c9d0b51184de17b5ea91b",
    "signer": "0x472B533E340a2BFd1816292204A5e22c6f355e3D",
    "userId": "588482306"
  }
}