{
  "manageEntity": {
    "action": "Update",
    "entityId": "618897887",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaa648bdeceac58a1f699cc00904d36557f20714211956cfcd3182625cbc74061",
    "signature": "0x8cd4b49ed5135ef1dddf28fe363d52492da5dde1445970318e76df2b6203da4e67ab1ee4abe6f865cda5d434c28bda4c9b015057ac24be52d2e99797e743ea2e1b",
    "signer": "0xEc8A837d2ea98a496c97C5680b0E1c47bDF45306",
    "userId": "618897887"
  }
}