{
  "manageEntity": {
    "action": "Update",
    "entityId": "982319444",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x86f6bef91abf851084ad2be2d3c3da5a173fa6e5a0f4590f46f5c2daa43d2ec1",
    "signature": "0xf76180e6507aa6b56a6ef85b28a362e2d4c714aebf35a87c5bbaf3228370a5022306de23b39a9d4a12a0e22eb6f2b592d70acc3d0cd6e66210419821f1c011601b",
    "signer": "0x75C07b69ED6e05C7c4086f5630e89b507BdFd7a0",
    "userId": "982319444"
  }
}