{
  "manageEntity": {
    "action": "Update",
    "entityId": "777019743",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6679eb79c69125ae2236418987966a16b558bf19e9738a671a15c624ff02e7c9",
    "signature": "0x837680e191729cb6de00a5293e12dda9acef3e259292fea62dd219c4275ab50c09def5a1de3a2ee9a27b5ee8f5647ec9fcfcf732834ded2ea7c0ef65f0d174c41c",
    "signer": "0xea5D672007F4615df066996Fa256301441396CAC",
    "userId": "777019743"
  }
}