{
  "manageEntity": {
    "action": "Update",
    "entityId": "326124312",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x39c8701abea33aea28ed23e4435c1e2d93aff5e1088ae0e9da5200d0fcccd1f5",
    "signature": "0xfab1d11af30220ddb41c9f8b1318f1a94bd95fcf428b0772f7dc70b9f94d422b2925fc6ef233bc0b9c0c1eaf6de4e70933cec3b0088b4c6357d6920a8b70ecce1b",
    "signer": "0xC674238B87b232dc2a03bD24e827257D4A9f1cEA",
    "userId": "326124312"
  }
}