{
  "manageEntity": {
    "action": "Update",
    "entityId": "328651993",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2f234232da38c76c85cac40665689a04d30b2ca954412f4cb26a0e12b10e70e9",
    "signature": "0x5e55bdbaf6b869d0df8c7e76eea51a0bb091f8becabf6b3d11a095ca2b8b966d5943f2ad3c6a5b923f4560e3100fcf34e566c03a1d6d4ab740de43510d1bf7391b",
    "signer": "0xD25F69c6Bb89d1F4bF111A1D815fD1cb53e15E84",
    "userId": "328651993"
  }
}