{
  "manageEntity": {
    "action": "Update",
    "entityId": "994273271",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe221793241bf78a073975bdabf9a7c2b8138e7df86a4fb41cab78ce755617e0c",
    "signature": "0x446de5d35a3911674a1cd3c3c95bec384c17ee90521186bc02781c8bff632aad7b60469ddbf7afaaf5c66b7f1a91a44db8eba14a868136357b5be7497bacb9141c",
    "signer": "0xF5771F55BBFfE8bC7930954AdCC1BAD77452b5Ba",
    "userId": "994273271"
  }
}