{
  "manageEntity": {
    "action": "Update",
    "entityId": "958873816",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x636c7836eb6bf86dc5d64a47cfa30740e58d05bdf92bfc097da3df463c865194",
    "signature": "0x08f5db0a829c15cd37e60d67bae52e2a2232d72c0bccf1ce5bb88d9f31dfe6857767a63ab932dcd25575db6245a2d54857c55155e618c3d20ac6b5de287554f51b",
    "signer": "0xa4be019Fc4b3b5D426BFb036faAF389D8e9eec6e",
    "userId": "958873816"
  }
}