{
  "manageEntity": {
    "action": "Update",
    "entityId": "329392138",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x02bcc8dd7663a3d25237db25c9408f066f2838ac028d244f727fb59381336f43",
    "signature": "0x6fa65405c00c66d08f1737ee63beb247fc3e483b161aaa52a81bb609bcc37c2630fb3928c9693baef7fe184998b816d9c649958859a35f5e6ea19f330b9ea9281b",
    "signer": "0xA8CCB2f7347eb0eAF35171eDbD0410B2fF7A049c",
    "userId": "329392138"
  }
}