{
  "manageEntity": {
    "action": "Update",
    "entityId": "171901978",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x74d6597f5cd0a67c5f7d6797b081229e0ccf0a155ed8bd173f9e90279a919e77",
    "signature": "0x1ecc0ed650386a0f01007415c1ac02018b706919f36852f3f00a5c3f9927ae9f7193865776729250582be77cf60ee787e622a47f51dfd28c833d57100242aec41c",
    "signer": "0x2C20ef89f36A703778F09b128Bc91B64D32608e2",
    "userId": "171901978"
  }
}