{
  "manageEntity": {
    "action": "Update",
    "entityId": "991822518",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9a4de2e89a8bffd4c2fb06b79bda0f6759e1af4bf620a814ab651a7b8a056d61",
    "signature": "0xc97ce87d58d89c977acd3fde42d2b1de49b440ee96e341f55670b41069aa9c745ee2e54ef84c38578496f372120d66d14288613f5e30f746279f4cd05b2f2ef81c",
    "signer": "0x561246FD13383982AD9e3a97F8D3bec81f63769d",
    "userId": "991822518"
  }
}