{
  "manageEntity": {
    "action": "Update",
    "entityId": "721987098",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcd86f343cb2eb43151360fcf430d0660b9a0fb79cb443b50917ae4c988bbdc0e",
    "signature": "0x45b759ae3db2694bdfef804bfe3fea63dbd30a670f79dc32475bfcbe3d18317540af2150a6cc61bb6a846587f5f81d71394dbdc035dcc1e2c97d28d4e274cab41c",
    "signer": "0x4c2B6D597D288449d9F215489E66f1cCe1c85B8F",
    "userId": "721987098"
  }
}