{
  "manageEntity": {
    "action": "Update",
    "entityId": "830022953",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7dmv6a2qrb7sklp64nebfyuneamdhrmvv4zqcqiml45vizwtokeq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1089360858}]}}}",
    "nonce": "0x9fd57c54d7c0537694c00e5264e95a429d4b4f63aaace4f448d6160538e419f3",
    "signature": "0x306aff6215456db897f07862682195d91da2ab970d8a1d481aa00de4b425bcb97056f2ce6170260a6cd792e0063ccd7020df5bb5ee154270548b974d074a52c31b",
    "signer": "0x7604Fc1Df216CC6E330cCbC9802aFa3E13F8EBE9",
    "userId": "830022953"
  }
}