{
  "manageEntity": {
    "action": "Update",
    "entityId": "248452238",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1b7c3440629c33802ae4dbf398eb54fe793395efe3ab13a34b8390049dff4d16",
    "signature": "0xc11124e1db72210045402614328ece6a0ce57a25e2d7cc710821a74c6483843a7527aad10cb330174a1048e7c6348e72655af9179125076743ac688cd6e8004a1b",
    "signer": "0x9170e0d46D862D288Bd9f40F5E1Def2B6B125a3b",
    "userId": "248452238"
  }
}