{
  "manageEntity": {
    "action": "Update",
    "entityId": "606900134",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1efeb9b07346927228456f24f27563378fd719ab01f4e88bc6a4b6ce50a6e0e0",
    "signature": "0xe8ce502ac8ce9e724a9610cb44ea0252cf00464ded0263ed3089837e37c79c3306d30ebad2aa31305597706bced917ef936185cc92ec457b9ae4065d9b97c1341c",
    "signer": "0x5a81BccDd6D352c2ee8F60f6C731E4125465471f",
    "userId": "606900134"
  }
}