{
  "manageEntity": {
    "action": "Update",
    "entityId": "508931608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0e5d15a3d620a5663cb96c9c7cc60d21c54e25108bb561eda0b51fbb2287a375",
    "signature": "0xa94233785287dfd6b7aa5dbaee7b3551620a101e7a0b0adddfc88ef41723918d6f28efeae9e4093c9124bae623e81ea192366baed715eecabb5c19966eeb44081c",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}