{
  "manageEntity": {
    "action": "Update",
    "entityId": "657789914",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6aad11976db61d6b0af66efc6816a0ebace3b460fd5a41d060cc4cb788af4641",
    "signature": "0xad51a8859416cc6ef6374b5c687fc810032f78138a0e753079aa60cb8287a4477f090f2df21b974d2e0531b984735b28ebd5d426ea194fbef73efb87ce1119aa1b",
    "signer": "0xa6f7cf3B012B7DD5c8560B1eAEc946e663584a79",
    "userId": "657789914"
  }
}