{
  "manageEntity": {
    "action": "Update",
    "entityId": "918602404",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7670b3f8e08b1d38974a42cc41991cd8862e251d818c0c187fe961e905cc6648",
    "signature": "0xc97c8a75017017801dac47316c2fd9da87a78ae4a1d45e04206b61de7982ee1758b21c6a2e5b9e59419020b5d7a68b8f8d1a59e049e5bf1b65f81885175bda3e1c",
    "signer": "0x9e6Bc923c3B1A420BDAF7b6dd8E4a6Bc51f0DfFC",
    "userId": "918602404"
  }
}