{
  "manageEntity": {
    "action": "Update",
    "entityId": "172591069",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x67a3557702e0c72a150857b9afd0374ede303a8d5aa691a3e68a47e86e631ce6",
    "signature": "0x45f576dcc75703772ab01c98f392e015380a981cbcc6b207a44266c241716c8b468777b1e88cac5374a42286a6545da1ae3fddd189c90c0835c5d443220746381b",
    "signer": "0x1c84301095a111E5fFa1e88C239FdE8FB68E581C",
    "userId": "172591069"
  }
}