{
  "manageEntity": {
    "action": "Update",
    "entityId": "440214081",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcda2723c282163906909dccb3a286dc2b8a246c7fb61e170808ae53506f353a5",
    "signature": "0xaa0a47739e7a9a75435fc4f52908b234acd963bea76212e03a507adafa8932b66dadba9ce1fb031186e68eeed6af145eecb9a359f5b7dbfe57fd3be7f85541831b",
    "signer": "0x64F9729C679Bb5C94De3ad988ecc2569757124C8",
    "userId": "440214081"
  }
}